Joseph kboitpa



(NqModel.) Y J, KROUP-A.

l GRATE. Y N0. 286,140. Patentedot. 2, 1883.

UNITED STATES rErcE.

PATENT GRATE.

SPECIFICATION forming part of Letters Patent No.,286,110, dated October 2, 1883.

Application tiled May 25, 1883. (No model.)

To all whom, may concern.-

Beit known that I, JosEri-I KROUPA, a citizen of the United States, residing at St. Louis, in the State of Missouri, have invented certain new and useful Improvements in Gratos; and I do declare the l'ollowi n g to be a full, clear,

and exact description ot' the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the letters aud`iigures ot' reference marked thereon, which torni a part of this specification.

My invention relates to improvements in grates and gratebars; and it consists in the construction, combination, and arrangement of the several parts, as will be hereinafter more fully described and claimed. In ,the drawings, Figure l is a plan and Fig. 2 is a. side view of a grat-e constructed according to my invention. Fig. 3 is a detail perspective view ot' one of the grate-sections, and Fig. 4. is a detail view of the crank-shaft, all of which will be described; and Fig. 5 is a detached view, showing a slight modification.

The frame A 4 is provided on its opposite ends with spindles Aywhich are intended to be supported in suitable bearings, sothat the frame andthe mechanism it carries may be rocked in the line ot' its length. In the side bars ot' this frame, near its ends, I provide bearings a (t for the gratessections, and about the middle ot' said bars I form. the bearingc for the erank-shait. From the inner sides of the end bars of the i'ralne A, Iprojeet the short breaking bars a, which are in the same plane with the side bars of the said frame A, and I also project the bars a up over the space occupied bythe cross-bars of the grate-seetions- Small pieces c a" are projected trom the sides ol the frame A in toward the rocking. ends ol" the grateseetions.

The grate-sections B B are constructed exactly alike, and made preferably with three parallel bars, B B2 B', and the cross-bar B3. This cross-bar is extended 011 either side beyond the bars B', and its extended ends are rested in the bearings a, providing substantially a pivotalconneetion or support i'or the sections near the ends of the frame A. The

bars B B2 are constructed with the projections b and b2, arranged, respectively, at the rocking ends and about the middle portion ofthe said bars, to aid-in the breaking and distribution of the coals and ashes as the sections are roekedin the manner hereinafter described. rThrough the ,bars B?, about midway the ends thereof, I i'orm the horizontal slot (l, the upper side of which is in the same plane with the under side of the bars B B, in line with the said slot. This may be accomplished by cutting away the underside of the bars H,

or forming the slot C in a downwardlyextended portion of the bar B2. X'Vhere so desired, the slot C could be -made through more than one ot' the bars. The reason ol' such construction will appear hereinafter. Then the sections B are placed in. the frame A,it will be seen that the bars ot' their meeting or adjacent ends intel-lap. The slots C ot thctwo sections coincide, and the barsin which said slots are formed are arranged next to each other.

A The crankshaft D is constructed with the spindle portions d d, which rest in the bearings (t inthe frame A, and the angular portion d, to receive the keyr E, is extended from one of these spindles, as shown. Next to the spindles d, I form the stop portions di, which are preferablyr made in the fiat form shown, with their edges d3 projected a short distance beyond the outer side of the spindles d, and its edge d is arranged in line with the rod d5, which rod forms a crank, the center of motion of which is the spindle d, as will be undei-stood on reference to the drawings. On the inner end of the portion d shoulders dl are formed, which, together with the shoulders formed on the ends of the adjacent portions J2, ordinarily serve to retain the shaft in its bearing. Vhere so desired., collars or disks e may be provided at the opposite ends of the spindle. orbearing d, next the angular portion d, as shown in Fig. 5, so as to prevent the falling of the pivot or spindle d from its place as the frame A is tilted, and retain the shaft D in position.

In setting up the grates the sections are arranged in the position shown in Fig. l, with their bars interlapped with the bar B2 of one section next the bar B2 of the other, and the slots C through the said bars coincident. The shaft I) is then passed through the slots C into place, and the sections are bent 011 the said shaft is rocked by the key E from side'to side,

it will be seen that, when the rod d5 is brought to the crown of the arc it describes, the sections will be raised,l as indicated in dotted lines.

Vhen the rod d5 is brought to the horizontal plane of the spindles d, the tendency of the said sections, being pivoted in the bearings a, would be to fall below the plane or' level of the frame A but for the stop portion d2, the edge d of which bears under the bars B', and a leounterbracing is had between the said edge d, bearing up against, the under side of the bars B of one section, and the rod d5, within the slot C of the bar B2 of the same section, and the sections are'prevented from falling below the level of theV frame. For this purpose the portion d need not be flat and eX- tended beyond the spindle, as shown, but might be made an extension of the spindle portion d.- I prefer, however, to make it as shown, as there is thus provided the edge d, which aids in the lifting action of the sections bearing under the bars B thereof, as has been described. I prefer to pivot both sections and operate them both by the crank-shaft; but where so desired one only of the sections may be pivoted at one end and supported by the crank-shaft, as will be readily understood; but by pivoting both sections and operating them by the crank-shaft a better and more efficient shaking is obtained. V

Having thus described my invention, what I claim, and desire to secure by Letters Patent,

1sf 1. In a grate, the combination, substantially as set forth, of a gratesection pivotally supported at one end, and having one or more of its bars provided with a horizontal slot, and a crankshaft supporting the rockingend of the said section, and constructed with the rod d5 and flat or stop portion d2, and suitably journaled, all as and for the purposes set forth.

2. In a grate, the combination, substantially as hereinbefore set forth, of the grate-sections having their outer ends pivotally supported and meeting and interlapping at their adjacent ends, and a crank-shaft arranged under and providing a support for the meeting ends of the gratesections, and suitably journaled,

whereby it may be revolved or rocked from side to side, as specified.

3.The combination of the frame having y spindles at its opposite ends, the grate-sections having one or more of their bars provided with a horizontal slot, and their other bars, on the under side thereof, in line with said slot, conformed to the plane of the upper side thereof, and the crank-shaft journaled in the framing, and constructed with the rod d5 and flat or stop portion or portions d2, the said parts df Z2 being arranged to counterbrace and hold the section in a level position when at rest, substantially as specified.

4. The grate, substantially as described andshown, consisting of the frame A, having spindies A A', the sections B, pivoted at their outer ends and interlapping at their meeting ends, and provided in one or more of their bars with slot C, and crank D, suitably journaled, and constructed with the rod d5 and ilat or stop portion d2, all arranged as and for the purposes specified.

Inl testimony whereof I affix my si gnaturein presence of two witnesses.

JOSEPH KROUPA.

Witnesses:

.GERARD FISHER, E. S. JEFFREY. 

